For this reason the value is known as the standard reduction potential of a substance.

因此，该值被称为物质的标准还原电位。

The standard reduction potential for zinc is -0.76 volts, but because zinc is oxidized in this reaction, we can't use the reduction potential directly.

锌的标准还原电位是-0.76伏，但由于锌在这个反应中被氧化，我们不能直接使用还原电位。

Now all standard reduction potentials are measured relative to the reduction of hydrogen ions to hydrogen gas, which is set at zero, just as a baseline.

现在，所有标准还原电位都是相对于氢离子还原为氢气的情况进行测量的，氢气设置为零， 作为基线。

To see how reduction potentials work in half reactions and combine in an overall reaction, let's consider a galvanic cell where zinc is oxidized and copper ions are reduced.

为了了解还原电位如何在半反应中起作用并在整个反应中结合，让我们考虑一个原电池， 其中锌被氧化而铜离子被还原。